205180160

素因数分解:

$2^8\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1021}}^1$

素因数の和:1199

約数の個数: 72

約数和(自身を含む): 495085416

約数和(自身を除く): 289905256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 314, 320, 628, 640, 785, 1021, 1256, 1280, 1570, 2042, 2512, 3140, 4084, 5024, 5105, 6280, 8168, 10048, 10210, 12560, 16336, 20096, 20420, 25120, 32672, 40192, 40840, 50240, 65344, 81680, 100480, 130688, 160297, 163360, 200960, 261376, 320594, 326720, 641188, 653440, 801485, 1282376, 1306880, 1602970, 2564752, 3205940, 5129504, 6411880, 10259008, 12823760, 20518016, 25647520, 41036032, 51295040, 102590080, 205180160]

約数ペア:

[(1, 205180160), (2, 102590080), (4, 51295040), (5, 41036032), (8, 25647520), (10, 20518016), (16, 12823760), (20, 10259008), (32, 6411880), (40, 5129504), (64, 3205940), (80, 2564752), (128, 1602970), (157, 1306880), (160, 1282376), (256, 801485), (314, 653440), (320, 641188), (628, 326720), (640, 320594), (785, 261376), (1021, 200960), (1256, 163360), (1280, 160297), (1570, 130688), (2042, 100480), (2512, 81680), (3140, 65344), (4084, 50240), (5024, 40840), (5105, 40192), (6280, 32672), (8168, 25120), (10048, 20420), (10210, 20096), (12560, 16336)]